Air vent cap



FIG. 1 is a perspective view of an air vent cap showing the new design:

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right -side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines illustrate portions of the air vent cap that form nopart of the claimed design.

CLAIM The ornamental design for an air vent cap, as shown and described.